[GH-19267] Spelling comments (#19268)

* spelling: comments

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/post_metadata.go

@@ -515,7 +515,7 @@ func (a *App) getLinkMetadata(requestURL string, timestamp int64, isNewPost bool
 		referencedPostID := requestURL[len(requestURL)-26:]
 
 		referencedPost, appErr := a.GetSinglePost(referencedPostID)
-		// TODO: Look into saving a value in the LinkMetadat.Data field to prevent perpetually re-querying for the deleted post.
+		// TODO: Look into saving a value in the LinkMetadata.Data field to prevent perpetually re-querying for the deleted post.
 		if appErr != nil {
 			return nil, nil, nil, appErr
 		}